Questions in mathematics

Questions in mathematics

📝 Answered - 53. \( y'' + 9y = 2 \sec 3x \)

📝 Answered - Find the 24th term of this arithmetic sequence. [tex]\begin{array}{c} -21,-14,-7,0,7, \ldots \ a_{24}=[?]\end{array}[/tex] Hint: [tex]a_n=a_1+(n-1) d[/tex]

📝 Answered - If [tex]f(x)=2 x^2+1[/tex], what is [tex]f(x)[/tex] when [tex]x=3[/tex]?

📝 Answered - Write a function rule for the table: | x | f(x) | |---|---| | 3 | -1 | | 4 | 0 | | 5 | 1 | | 6 | 2 | A. [tex]f(x)=x-4[/tex] B. [tex]f(x)=4-x[/tex] C. [tex]f(x)=x+4[/tex]

📝 Answered - Which expression is equivalent to $i^{233}$? A. 1 B. -1 C. i D. -i

📝 Answered - Use Pascal's Triangle to expand the binomial $(3 x-4)^3$. A. $27 x^3+108 x^2+144 x+64$ B. $27 x^3+108 x^2+144 x-64$ C. $27 x^3-108 x^2+144 x-64$ D. $27 x^3-108 x^2-144 x+64$

📝 Answered - Which equation could be solved using this application of the quadratic formula? [tex]x=\frac{-8 \pm \sqrt{8^2-4(3)(-2)}}{2(3)}[/tex]

📝 Answered - What is the next number in the sequence? $1, 8, 21, 64, 125$

📝 Answered - Find the product of $(4 z^2+7 z-8)$ and $(-z+3)$. The product of $(4 z^2+7 z-8)$ and $(-z+3)$ is $-4 z^3+$ $\square$ $z^2+$ $\square$ $z-24$

📝 Answered - Translate "6 more than $k$ exceeds 25" to an inequality and then solve. A. $k \geq 19$ B. $k<19$ C. $k>19$ D. $k \leq 19$